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Date: Wed, 30 Sep 2015 07:48:00 -0000
Message-ID: <CAFULd4b=dC+YLcdet0qNUG_gtVvQ5XdYQrkifmo91F7KPZHLBw@mail.gmail.com>
Subject: Re: [PATCH, PR target/67761] Fix i686-*-* bootstrap comparison failure
From: Uros Bizjak <ubizjak@gmail.com>
To: "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>
Cc: =?UTF-8?B?0JjQu9GM0Y8g0K3QvdC60L7QstC40Yc=?= <enkovich.gnu@gmail.com>
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X-SW-Source: 2015-09/txt/msg02298.txt.bz2

Hello!

> My recenttly introduced STV pass doesn't skip debug instructions and it causes transformation
> (mistly cost computation) depending on debug info.  It causes bootstrap comparison failure.  This
> patch fixes.  Bootstrapped for i686-linux.  Testing for x86_64-unknown-linux-gnu{,m32} is in
> progress.  OK for trunk if pass?

IMO, it would be also beneficial to bootstrap with slm default
architecture, so new code paths get some coverage via bootstrap.

> gcc/
>
> 2015-09-29  Ilya Enkovich  <enkovich.gnu@gmail.com>
>
> * config/i386/i386.c (scalar_chain::analyze_register_chain): Ignore
> debug insns.
> (scalar_chain::convert_reg): Likewise.
>
> gcc/testsuite/
>
> 2015-09-29  Ilya Enkovich  <enkovich.gnu@gmail.com>
>
> * gcc.target/i386/pr67761.c: New test.

OK.

Thanks,
Uros.